jsPerf.app is an online JavaScript performance benchmark test runner & jsperf.com mirror. It is a complete rewrite in homage to the once excellent jsperf.com now with hopefully a more modern & maintainable codebase.
jsperf.com URLs are mirrored at the same path, e.g:
https://jsperf.com/negative-modulo/2
Can be accessed at:
https://jsperf.app/negative-modulo/2
Side note on big numbers (32-bit or bigger)
The result of binary operations are signed 32-bit numbers. Standard ECMA-262 5.1
Ready to run.
| Test | Ops/sec | |
|---|---|---|
| parseInt(x) | | ready |
| parseInt(x, 10) | | ready |
| +x | | ready |
| ~~x | | ready |
| parseFloat(x) | | ready |
| Number(x) | | ready |
| new Number(x) | | ready |
| Math.floor(x) | | ready |
| Math.ceil(x) | | ready |
| Math.round() | | ready |
| x >> 0 | | ready |
| x >>> 0 | | ready |
| x - 0 | | ready |
| x + 0 | | ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.